I have a BlackBerry 8800 for work which is generally a good thing. I can read and write email, notes and calendar entries from anywhere, surf the web, get a route calculated from my current position and so on and so on.
Still, it’s a work gadget, so it would be just half the fun if it hadn’t a micro SD card slot and wasn’t capable of playing music and videos. So I installed a 6 GB card and copied some music on it. When I reinserted the card I was presented a message box saying, “Media card has been inserted that contains errors. To correct the errors please use a disk error checking utility on a computer.” (or “Es wurde eine fehlerhafte Medienkarte eingelegt…” in German).
In case you ever run across this message, make sure that your files on the media card have no spaces in it. The BlackBerry obviously can’t deal with them. Moreover, I removed all special characters from the files as a precaution. It worked for me then.